Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska
International audience Fairbanks, central Alaska, is a sub-Arctic city that frequently suffers from non-attainment of national air quality standards in the wintertime due to the coincidence of weak atmospheric dispersion and increased local emissions but large uncertainties exist about aerosol sourc...
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Language: | English |
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HAL CCSD
2024
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Online Access: | https://insu.hal.science/insu-04508001 https://insu.hal.science/insu-04508001/document https://insu.hal.science/insu-04508001/file/EGU24-11073-print.pdf https://doi.org/10.5194/egusphere-egu24-11073 |
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Météo-France: HAL |
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ftmeteofrance |
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English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Ijaz, Amna Temime-Roussel, Brice Barret, Brice Slimane, Bekki Brett, Natalie Cesler-Maloney, Meeta Fochesatto, Javier Chazeau, Benjamin Savarino, Joel Law, Kathy S. Simpson, William d'Anna, Barbara Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Fairbanks, central Alaska, is a sub-Arctic city that frequently suffers from non-attainment of national air quality standards in the wintertime due to the coincidence of weak atmospheric dispersion and increased local emissions but large uncertainties exist about aerosol sources and formation. We determined the general composition and mass concentrations of atmospheric sub-micron non-refractory particulate matter (NR-PM1) and quantified the sources involved in its formation during a 6-week campaign in the urban centre of Fairbanks in January-February 2022. As part of the Alaskan Layered Pollution and Chemical Analysis campaign (ALPACA), we deployed a Chemical Analysis of Aerosol Online (CHARON) inlet coupled with a proton transfer reaction - time of flight mass spectrometer (PTR-ToF 6000 Ionicon Analytik) and high-resolution aerosol mass spectrometer (HR-ToF-AMS Aerodyne) to measure organic aerosol (OA) and NR-PM1, respectively, with high temporal resolution of ≤1 min. We performed positive matrix factorisation (PMF) of the measurements to apportion aerosol mass to potential sources. The ability of HR-ToF-AMS to measure inorganic species (ammonium, nitrates, sulphates, and chlorides) creates an opportunity to gain insights into their mixing with OA and chemical dynamics. Campaign-averages of OA measured with the two instruments agreed reasonably well (R2 = 0.60) with a regression slope of 0.46. Higher OA concentrations observed with the HR-ToF-AMS are attributable to the particle size-dependence of the CHARON inlet, since it is more sensitive to particles >150 nm; a regression slope approaching 1.0 was achieved for larger primary OA emissions from biomass burning. On the one hand, in line with known emission patterns in Fairbanks, PMF indicated residential heating (Res-H) to be the single largest source of OA here during the wintertime as per CHARON PTR-ToF-MS measurements. A large fraction of OA originated from the combustion of different types of wood (2.07 ± 2.47 µg/m3; 47.15 ± ... |
author2 |
Laboratoire Chimie de l'environnement (LCE) Aix Marseille Université (AMU)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) TROPO - LATMOS Department of Chemistry and Biochemistry Fairbanks University of Alaska Fairbanks (UAF) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) |
format |
Conference Object |
author |
Ijaz, Amna Temime-Roussel, Brice Barret, Brice Slimane, Bekki Brett, Natalie Cesler-Maloney, Meeta Fochesatto, Javier Chazeau, Benjamin Savarino, Joel Law, Kathy S. Simpson, William d'Anna, Barbara |
author_facet |
Ijaz, Amna Temime-Roussel, Brice Barret, Brice Slimane, Bekki Brett, Natalie Cesler-Maloney, Meeta Fochesatto, Javier Chazeau, Benjamin Savarino, Joel Law, Kathy S. Simpson, William d'Anna, Barbara |
author_sort |
Ijaz, Amna |
title |
Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska |
title_short |
Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska |
title_full |
Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska |
title_fullStr |
Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska |
title_full_unstemmed |
Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska |
title_sort |
online charon ptr-tof-ms measurements elucidate residential heating as the major contributor of wintertime organic aerosol in fairbanks, alaska |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://insu.hal.science/insu-04508001 https://insu.hal.science/insu-04508001/document https://insu.hal.science/insu-04508001/file/EGU24-11073-print.pdf https://doi.org/10.5194/egusphere-egu24-11073 |
op_coverage |
Vienna, Austria |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
EGU General Assembly 2024 https://insu.hal.science/insu-04508001 EGU General Assembly 2024, Apr 2024, Vienna, Austria. pp.EGU24-11073, ⟨10.5194/egusphere-egu24-11073⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu24-11073 insu-04508001 https://insu.hal.science/insu-04508001 https://insu.hal.science/insu-04508001/document https://insu.hal.science/insu-04508001/file/EGU24-11073-print.pdf doi:10.5194/egusphere-egu24-11073 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/egusphere-egu24-11073 |
_version_ |
1802641768524546048 |
spelling |
ftmeteofrance:oai:HAL:insu-04508001v1 2024-06-23T07:50:50+00:00 Online CHARON PTR-ToF-MS measurements elucidate residential heating as the major contributor of wintertime organic aerosol in Fairbanks, Alaska Ijaz, Amna Temime-Roussel, Brice Barret, Brice Slimane, Bekki Brett, Natalie Cesler-Maloney, Meeta Fochesatto, Javier Chazeau, Benjamin Savarino, Joel Law, Kathy S. Simpson, William d'Anna, Barbara Laboratoire Chimie de l'environnement (LCE) Aix Marseille Université (AMU)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) TROPO - LATMOS Department of Chemistry and Biochemistry Fairbanks University of Alaska Fairbanks (UAF) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Vienna, Austria 2024-04 https://insu.hal.science/insu-04508001 https://insu.hal.science/insu-04508001/document https://insu.hal.science/insu-04508001/file/EGU24-11073-print.pdf https://doi.org/10.5194/egusphere-egu24-11073 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu24-11073 insu-04508001 https://insu.hal.science/insu-04508001 https://insu.hal.science/insu-04508001/document https://insu.hal.science/insu-04508001/file/EGU24-11073-print.pdf doi:10.5194/egusphere-egu24-11073 info:eu-repo/semantics/OpenAccess EGU General Assembly 2024 https://insu.hal.science/insu-04508001 EGU General Assembly 2024, Apr 2024, Vienna, Austria. pp.EGU24-11073, ⟨10.5194/egusphere-egu24-11073⟩ [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference papers 2024 ftmeteofrance https://doi.org/10.5194/egusphere-egu24-11073 2024-06-03T23:55:14Z International audience Fairbanks, central Alaska, is a sub-Arctic city that frequently suffers from non-attainment of national air quality standards in the wintertime due to the coincidence of weak atmospheric dispersion and increased local emissions but large uncertainties exist about aerosol sources and formation. We determined the general composition and mass concentrations of atmospheric sub-micron non-refractory particulate matter (NR-PM1) and quantified the sources involved in its formation during a 6-week campaign in the urban centre of Fairbanks in January-February 2022. As part of the Alaskan Layered Pollution and Chemical Analysis campaign (ALPACA), we deployed a Chemical Analysis of Aerosol Online (CHARON) inlet coupled with a proton transfer reaction - time of flight mass spectrometer (PTR-ToF 6000 Ionicon Analytik) and high-resolution aerosol mass spectrometer (HR-ToF-AMS Aerodyne) to measure organic aerosol (OA) and NR-PM1, respectively, with high temporal resolution of ≤1 min. We performed positive matrix factorisation (PMF) of the measurements to apportion aerosol mass to potential sources. The ability of HR-ToF-AMS to measure inorganic species (ammonium, nitrates, sulphates, and chlorides) creates an opportunity to gain insights into their mixing with OA and chemical dynamics. Campaign-averages of OA measured with the two instruments agreed reasonably well (R2 = 0.60) with a regression slope of 0.46. Higher OA concentrations observed with the HR-ToF-AMS are attributable to the particle size-dependence of the CHARON inlet, since it is more sensitive to particles >150 nm; a regression slope approaching 1.0 was achieved for larger primary OA emissions from biomass burning. On the one hand, in line with known emission patterns in Fairbanks, PMF indicated residential heating (Res-H) to be the single largest source of OA here during the wintertime as per CHARON PTR-ToF-MS measurements. A large fraction of OA originated from the combustion of different types of wood (2.07 ± 2.47 µg/m3; 47.15 ± ... Conference Object Arctic Alaska Météo-France: HAL Arctic Fairbanks |